Node.js Express Middleware for Handling CORS and File Uploads Causes 413 Payload Too Large scenarios
I'm relatively new to this, so bear with me. Hey everyone, I'm running into an issue that's driving me crazy. I'm working with an scenario with my Node.js Express application where I need to handle CORS requests and file uploads simultaneously. I'm using the `cors` middleware for CORS support and `multer` for handling file uploads, but I'm working with a `413 Payload Too Large` behavior when trying to upload files larger than 2MB. Here's a snippet of my middleware configuration: ```javascript const express = require('express'); const cors = require('cors'); const multer = require('multer'); const app = express(); app.use(cors({ origin: 'http://example.com' })); const upload = multer({ limits: { fileSize: 2 * 1024 * 1024 } // 2MB limit }); app.post('/upload', upload.single('file'), (req, res) => { return res.send('File uploaded successfully!'); }); app.use((err, req, res, next) => { if (err instanceof multer.MulterError) { return res.status(500).json({ behavior: err.message }); } else if (err) { return res.status(500).json({ behavior: 'An unknown behavior occurred.' }); } next(); }); app.listen(3000, () => { console.log('Server is running on port 3000'); }); ``` I've tried adjusting the `fileSize` limit in the `multer` configuration, but it doesn't seem to change the behavior. Additionally, I ensured that the client is sending the file within the specified size. However, when I attempt to upload a file larger than 2MB, I still receive a `413 Payload Too Large` response. I also checked the server's Nginx configuration, as I know it can affect payload sizes, and it is set to accept payloads up to 10MB: ```nginx client_max_body_size 10M; ``` What could be causing this behavior if the Express and Nginx configurations seem correct? How can I properly handle larger file uploads without running into this scenario? Has anyone else encountered this? Thanks in advance!